Used primarily as an antioxidant in plastics, rubber, synthetic fibers, adhesives, and sealants to prevent degradation caused by heat and oxidation during processing and long-term use. It stabilizes polymers by scavenging free radicals and decomposing peroxides, thereby extending the material’s service life. Commonly found in polyolefins such as polyethylene and polypropylene, it maintains flexibility and strength under high-temperature conditions. Applications include plastic pipes, cables, and automotive parts exposed to elevated temperatures. Also employed in lubricants and certain oils to inhibit oxidation and preserve fluid properties. Its low volatility and good compatibility with organic matrices make it suitable for applications requiring prolonged thermal stability.